본 발명은 이온함량이 현저히 저감되고 색 특성이 향상된 무수당 알코올의 제조 방법에 관한 것으로서, 보다 상세하게는, 수소화 당(당 알코올)을 탈수반응시켜 무수당 알코올로 전환시킨 뒤 증류단계를 거쳐 분리된 증류물을 활성탄으로 탈색처리하고, 탈색된 결과물을 이어서 이온교환수지와 접촉시킴으로써, 이온함량이 현저히 저감되고 전도도가 현저히 낮으며 색 특성이 향상된 무수당 알코올을 제조하는 방법에 관한 것이다.
The present invention relates to a production method for an anhydro sugar alcohol having a markedly reduced ion content and improved colour characteristics, and, more specifically, relates to a method for producing an anhydrous sugar alcohol having a markedly reduced ion content, markedly lowered electrical conductivity and improved colour characteristics, which is obtained by subjecting hydrogenated sugar (sugar alcohol) to a dehydration reaction and thereby converting same to an anhydrous sugar alcohol and then subjecting distilled water, which has been isolated through a distillation step, to a decolourizing process using activated carbon, and subsequently bringing the resulting decolourized substance into contact with an ion exchange resin.patents-wipo patents-wipo